Machine eoe



UNITED STATES PATENT OFFICE.

CYRUS CHAMBERS, JR., OF PHILADELPHIA, PENNSYLVANIA.

MACHINE FOR FOLDING PAPER.

Speccation of Letters Patent No. 30,719, dated November 27, 1860.

T o all whom 'it may concern:

Be it known that I, CrRUs CHAMBERS, Jr., of the city and county ofPhiladelphia and State of Pennsylvania, have invented certain new anduseful Improvements in Machinery for Cutting and Folding Paper; and I dohereby declare the following to be a full, clear, and eXact descriptionof the saine, reference 4being had to the accompanying drawings, inwhichd Figure 1 is a plan or topview of the improved machine; Fig. 2 isa vertical section of the same on the line .1 2 of Fig. 1; Fig. 3 showsa modification of the arrangement shown in Fig. 2, and Fig. 4 is a sideview of the rotary cutters, showing the mode of their attachment to therollers.

My invention consists in such a modification of the well known 8vo. bookfolding machine patented by me 5th April 1859, as shall adapt it to thefolding of a double 121no. sheet, or a sheet composed of 24 pages,

so imposed that eight of the pages are cut off from the main sheet,folded, and placed within the remaining sixteen pages, as hereinaftermore fully set forth; and its principal peculiarities are rst, securingthe revolving cutters which cut oft the inset, to a portion of the firstfolding rollers so that they may be easily adjusted; second, a peculiararrangement of the stop for the inset; third, carrying the inset to sucha position relatively to the main sheet that it may be folded properlywithin it.

To enable others to make and use my invention, I will proceed todescribe particularly its construction and operation making reference tothe drawings forming part of this specification in which the saineletter indicates the saine part wherever it occurs.

A marks the cross rails of the main frame which are made about sixinches longer than those of an ordinary 8vo. machine.

B B are the iirst folding rollers. On their shafts are placed two shortadjustable rollers B B', to which are attached, by feathers and grooves,as seen in Fig. 4, the rotating cutters C C, which revolve with therollers. The cutters C are held in contact by a spiral spring D, on theshaft of one of the rollers, as shown, said spring press ing against theend of the roller on whose shaft it is placed.v Both rollers areadjusted `to the desired position and retained there by means of thescrew E, which has a Aflange upon its end working in a groove in theroller as clearly shown in Fig. 1. The second and third-pairs ofrollers, F F and G Gr, are arranged substantially in the mannerdescribed in the patent before alluded to.

The first stop is made in two parts H and H, so that the part H',against which that part of the sheet which is cut from the main sheetcomes, can be adjusted independently of the main portion H ofthe stop,for reasons hereafter given. The part H is made thus adjustable on thepart H by means of screws, as shown in Fig. 1.

Two additional tapes are placed on the adjustable part B', of thefolding rollers, for the purpose of conducting out, against the stopI-I, that part. of the sheet which is cut off by the rotating cutters C.

Parallel to the second folding rollers F F is an additional roller I,which turns in suitable bearings, and receives mot-ion from one of therollers E, by any convenient gearing. Around this roller, pass two tapesJ,

which are carried to two tape pulleys K K lwhich extend from the undersurface of rollers F just above the level of the tapes leadingtherefrom, and have their main support inthe frame of the machine, asshown in Figs. 1 and 2.l The bars N support the adjustable stop Q fromwhich project the short guiding bars It.

Secured in suitable bearings to the side frame, is a vibrating frame O,carrying a drop roller P. This frame receives its vibratory motion fromthe second folding knife T, by means of an arm extending over the backof that knife, as shown, so that when the knife rises and falls, theframe O and roller P rise and fall with' it. The roller P receivesrotary motion from the tapes J when it is down and lin contact withthem. Its vibratory motion may be obtained, if preferred, by means of anindependent cam in the mode commonly employed in printing presses. Y

Fig. 3 shows a modification of this arrangement, which consists inenlarging the roller I, and placing it in the position of the tapepulleys K K, so that the drop roller l? may come into direct contactwith it; and thereby dispensing with the pulleys K K, the tapes J J, thebars N and branchesV M, substituting for the last the curved bars S,shaped and located as represented. The object of these changes willhereafter appear.

All parts necessary for the proper feeding, manipulation and delivery ofthe sheets, which are not described and shown in this application, willbe found fully set forth and illustrated in the several patentsheretofore granted to me, and do not require renewed description here.

Operation: The operation of the machine is as follows: 'Ihe 12mo. sheetis fed to the machine in the proper position for the first knife to makethe first fold in the main sheet,

as well as in the inset, or that part which is to be cut off by therevolving cutters C, and so that the second folding knife T, will makethe second fold in the main sheet in the desired place.

The cutters C are adjusted by the screw E to the proper position forcutting off the inset, which will depend on the size of the sheet to befolded. The rst folding knife, (not shown), on descending, forces thewhole sheet between the rollers B B and B B, which, by their rotation,carry the sheet in, and make the first fold, the cutters C cutting offthe inset as it passes between the rollers. When the sheet has passedthe rollers, the folded edge of the main sheet, or that part whichcontains sixteen pages, is arrested by coming in contact with the stopI-I; and the corresponding edge of the inset, or the part containingeight pages, is arrested by the independent stop H', being conducted bytapes fromv the rollers B. The main sheetis now ready to receive itssecond fold.

In order properly to present the inset for correct folding by the lastfolding knife V, and to get it within the main sheet, it is necessary,according to the present method of imposing, that it should be turnedupside down, and the cut edge brought even with the second folded edgeof the main sheet. The imposition of the sheet might, if preferred,befchanged, so that the pages of the inset would come in their properorder without turning, and this part of the mechanism would then beunnecessary.

On the descent of the second folding knife T, the drop roller P comes incontact with Vthe tape pulleys K K, and binds the cut edge of theinset-between its own surface and that of the tape on said pulleys,starting the inset under the points of the bars M, and carrying itaround the roller I, Fig. 2. By the friction of the roller I, and thetapes J, it is moved forward on the bars N, until its cut edge isbrought against the stop Q. At the same time, the main sheet hasreceived its second fold, and been carried forward by the tapes untilits folded edge strikes against the same stop Q. The inset is now in aproper position to receive its second fold, and the main sheet toreceive its third, the former lying directly over the latter andseparated from it only by the bars N. The third folding blade V nowdescends and forces both sheet and inset between the last pair offolding rollers G G, which complete the folding and discharge them tothe packing apparatus, the inset beingfolded within the main sheet, andin the proper position.

If the modification represented by Fig. 3 be used, the drop roller Pmust be so timed as to start the inset so that its cut edge will be alittle in advance of the second folded edge of the main sheet when theymeet as clearly represented by the heavy black lines at U in thatfigure. When the cut edge of the inset strikes against the stop Q, (Fig.3) the friction of the tapes against the under surface of the main sheetcarries it forward until its folded edge strikes the stop, thus bringingthe folded edge and cut edge of the two even, when they are ready forthe action of the third folding knife V which completes the folding asbefore described.

When it is desired to make the second fold in the inset a greater orless distance from the first, than the third fold is from the first inthe main sheet, (which, owing to imperfect register in the printing, issometimes the case), it may be accomplished by adjusting the stop I-I toa different line from that of stop H by means ofthe small screws in I-Ifshown in Fig. l.

Having thus fully described my improvements I do not claim broadly thecombination of cutters with folding rollers irrespective of myparticular mode of attaching and adjusting them, nor do I claim in thisapplication adjustable stops; but

What I claim and desire to secure by Letters Patent is- 1. In folding asheet where an inset is to be cut off, placing the inset by automaticmechanism, on the outset, and in proper position to receive the lastfold.

2. Combining in one machine the mechanism for cutting off the inset,placing it on the outset, or main sheet, in proper position, and foldingit therewith.

3. The combination with folding rollers The above specification signedand Witof rotating cutters, when both are adjustable nessed thisnineteenth day of November', 10 in the manner and for the purposes de-1859.

scribed.

4L. The supplemental stop H', against CYRUS CHAMBERS JR' which the insetcornes, When made adjust- Witnesses: able with, as Well as independentlyof the DAVID BERTLER stop H, as and for the purpose specied. RICHARDTHOMPSON.

